Patents by Inventor Morio Yagihara

Morio Yagihara has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4518685
    Abstract: A silver halide photographic light-sensitive material which comprises a support having thereon a light-sensitive silver halide emulsion layer, wherein the photographic light-sensitive material contains a blocked photographic agent therein represented by formula (I): ##STR1## wherein A represents a photographic agent moiety which is bonded to a blocking moiety through a hetero atom or a group which is bonded to a blocking moiety through a hetero atom and capable of releasing a photographic agent upon a subsequent reaction after the group is released; Y represents a hydrogen atom or a substituent; and Z represents an atomic group necessary to form a carbocyclic ring or a heterocyclic ring.The precursor of photographic agent is completely stable during the preservation of the photographic light-sensitive material and releases a photographic agent at a desired time upon the processing of the photographic light-sensitive material.
    Type: Grant
    Filed: April 17, 1984
    Date of Patent: May 21, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Morio Yagihara, Akihiko Ikegawa, Mitsunori Ono, Yuji Mihara
  • Patent number: 4511647
    Abstract: A silver halide color photographic light-sensitive material is disclosed. Their material is comprised of a support having thereon a silver halide emulsion layer containing a cyan color image forming polymer coupler latex. This latex is comprised of a recurring unit of a cyan coupler monomer capable of forming a dye upon coupling with an oxidation product of an aromatic primary amine developing agent represented by the general formula (I) and a recurring unit of an ethylenically unsaturated monomer containing an acid component represented by the general formula (II) and a recurring unit of methyl acrylate. ##STR1## The cyan color image forming polymer coupler latex has excellent color forming properties and photographic material containing the coupler latex provides a cyan image having good fastness to heat and the combination of heat and humidity. A method for forming a color image utilizing the disclosed photographic material containing the novel couple of latex is also disclosed.
    Type: Grant
    Filed: November 9, 1983
    Date of Patent: April 16, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tsumoru Hirano, Morio Yagihara, Makoto Umemoto
  • Patent number: 4500634
    Abstract: A silver halide color photographic material in which both a coupler capable of releasing a diffusible development restrainer by coupling and a polymer coupler latex are present to increase visual sharpness.
    Type: Grant
    Filed: August 24, 1983
    Date of Patent: February 19, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kei Sakanoue, Morio Yagihara, Seigi Ichijima, Kimitoshi Nagao
  • Patent number: 4496650
    Abstract: A silver halide color photographic light-sensitive material comprised of a support having thereon a silver halide emulsion layer containing a cyan color image forming polymer coupler latex is disclosed. The cyan color image forming polymer coupler latex is comprised of at least one repeating unit capable of forming a dye upon coupling with an oxidation product of an aromatic primary amine developing agent represented by the general formula (Ia) and at least one repeating unit represented by the general formula (II): ##STR1## the substituents within the general formulae are disclosed within the specification. The cyan color image forming polymer coupler latex has excellent color forming properties and the silver halide color photographic light-sensitive material which contains the latex provides a photograph in which the occurrence of color stain due to light is substantially prevented. A method of forming a color image using the silver halide color photographic light-sensitive material is also described.
    Type: Grant
    Filed: January 17, 1984
    Date of Patent: January 29, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Morio Yagihara, Tsumoru Hirano, Makoto Umemoto
  • Patent number: 4495272
    Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon a silver halide emulsion layer containing a cyan color image forming polymer coupler latex capable of forming a dye upon coupling with an oxidation product of an artomatic primary amine developing agent wherein the cyan color image forming polymer coupler latex contains at least one repeating unit represented by the general formula (I) described below and at least one repeating unit represented by the general formula (II) described below. ##STR1## wherein R.sub.1 represents a hydrogen atom, a lower alkyl group containing from 1 to 4 carbon atoms or a chlorine atom; and Q represents a cyan coupler residue capable of forming a dye upon coupling with an oxidized aromatic primary amine developing agent, ##STR2## wherein R.sub.2 represents a hydrogen atom, a lower alkyl group containing from 1 to 4 carbon atoms or a chlorine atom; and R.sub.3 and R.sub.
    Type: Grant
    Filed: July 12, 1983
    Date of Patent: January 22, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Morio Yagihara, Tsumoru Hirano, Mitsunori Hirano, Makoto Umemoto
  • Patent number: 4474870
    Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon a silver halide emulsion layer containing a magenta color image forming polymer coupler latex which is capable of forming a dye upon coupling with an oxidation product of an aromatic primary amine developing agent and which is a polymer or copolymer having a repeating unit derived from a monomer represented by the following general formula (I): ##STR1## wherein R.sub.1 represents a hydrogen atom, a lower alkyl group containing from 1 to 4 carbon atoms or a chlorine atom; R.sub.2 represents an unsubstituted or substituted alkylene group which may be a straight chain or a branched chain; R.sub.
    Type: Grant
    Filed: January 11, 1983
    Date of Patent: October 2, 1984
    Assignee: Fuji Photo Film Company Limited
    Inventors: Morio Yagihara, Keiji Mihayashi, Takashi Ozawa
  • Patent number: 4455363
    Abstract: A heat-developable color photographic material comprising a support having thereon at least a light-sensitive silver halide, an organic silver salt oxidizing agent, a hydrophilic binder, a reducing agent for the silver halide and/or the organic silver salt oxidizing agent and a magenta color image forming polymer coupler latex which is capable of forming a diffusible dye upon coupling with an oxidized product of the reducing agent and which is a homopolymer or copolymer having a repeating unit derived from a monomer coupler represented by the following general formula (I): ##STR1## wherein R.sub.1 represents hydrogen, a lower alkyl group containing from 1 to 4 carbon atoms or a chlorine atom; R.sub.2 and R.sub.
    Type: Grant
    Filed: March 2, 1983
    Date of Patent: June 19, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hideki Naito, Hiroshi Hara, Morio Yagihara
  • Patent number: 4455366
    Abstract: A silver halide color, photographic light-sensitive material comprising a support having thereon a silver halide emulsion layer containing a cyan color image forming polymer coupler latex which is capable of forming a dye upon coupling with an oxidation product of an aromatic primary amine developing agent and which is a polymer or copolymer having a repeating unit derived from a monomer represented by the following general formula (I): ##STR1## wherein R.sub.1 represents a hydroden atom, a lower alkyl group containing from 1 to 4 carbon atoms or a chlorine atom; R.sub.2 represents a hydrogen atom or an unsubstituted or substituted alkyl group having from 1 to 4 carbon atoms; A.sub.1 represents an unsubstituted or substituted alkylene group which may be a straight chain or a branched chain; A.sub.2 represents an unsubstituted or substituted alkylene group which may be a straight chain or a branched chain, an unsubstituted or substituted aralkylene group or an unsubstituted or substituted phenylene group; B.
    Type: Grant
    Filed: June 6, 1983
    Date of Patent: June 19, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tsumoru Hirano, Makoto Umemoto, Morio Yagihara
  • Patent number: 4444870
    Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon a layer containing at least one copolymer coupler latex having a layered structure capable of forming a dye upon coupling with an oxidation product of an aromatic primary amine developing agent. The polymer coupler latex having a layered structure has an exceptionally good color forming property and is capable of forming a dye with a high yield and without the formation of undesired stains and fogs. The silver halide color photographic light-sensitive material containing the polymer coupler latex has good film strength and a reduced layer thickness and provides a color image having an improved sharpness. A method of forming a color image using the silver halide color photographic light-sensitive material is also disclosed.
    Type: Grant
    Filed: September 7, 1982
    Date of Patent: April 24, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tsumoru Hirano, Keiji Mihayashi, Morio Yagihara
  • Patent number: 4436808
    Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon a silver halide emulsion layer containing a magenta color image forming polymer coupler latex which is capable of forming a dye upon coupling with an oxidation product of an aromatic primary amine developing agent and which is a homopolymer or copolymer having a repeating unit derived from a monomer coupler represented by the following general formula (I): ##STR1## wherein R.sub.1 represents hydrogen, a lower alkyl group containing from 1 to 4 carbon atoms or a chlorine atom; R.sub.2 and R.sub.3, which may be the same or different, each represents an unsubstituted or substituted alkylene group which may be a straight chain or a branched chain, an unsubstituted or substituted arylene group or an unsubstituted or substituted aralkylene group; X represents --CONH-- or --COO--; Y represents --O--, --S--, --SO--, --SO.sub.2 --, --CONH-- or --COO--; Ar represents an unsubstituted or substituted phenyl group; R.sub.
    Type: Grant
    Filed: February 25, 1983
    Date of Patent: March 13, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Morio Yagihara, Tsumoru Hirano, Keiji Mihayashi
  • Patent number: 4435503
    Abstract: A silver halide color photographic light-sensitive material containing a 4-equivalent magenta color image forming polymer coupler latex and at least one compound capable of reacting with and fixing formaldehyde gas. The silver halide color photographic light-sensitive material has good film strength and a reduced layer thickness. It is possible to avoid the decrease in color density and the formation of fog normally present when the silver halide color photographic light-sensitive material is stored for a long period of time in contact with formaldehyde gas.
    Type: Grant
    Filed: July 13, 1982
    Date of Patent: March 6, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Keiji Mihayashi, Tadashi Ogawa, Morio Yagihara
  • Patent number: 4416978
    Abstract: A silver halide color photographic light-sensitive material containing a magenta color image forming polymer coupler latex and at least one compound represented by the following general formula (I) ##STR1## wherein R represents an alkyl group, an alkenyl group, an aryl group, a heterocyclic group, a R.sub.4 CO-- group, a R.sub.5 SO.sub.2 -- group or a R.sub.6 NHCO-- group; R.sub.1 and R.sub.2, which may be the same or different, each represents a hydrogen atom, a halogen atom, an alkyl group, an alkenyl group, an alkoxy group or an alkenoxy group; R.sub.3 represents a hydrogen atom, an alkyl group, an alkenyl group or an aryl group; and R.sub.4, R.sub.5 and R.sub.6 each represents an alkyl group, an alkenyl group, an aryl group or a heterocyclic group.
    Type: Grant
    Filed: June 10, 1982
    Date of Patent: November 22, 1983
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masakazu Morigaki, Morio Yagihara, Takashi Ozawa
  • Patent number: 4409320
    Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon a silver halide emulsion layer containing a magenta color image forming polymer coupler latex which is capable of forming a dye upon coupling with an oxidation product of an aromatic primary amine developing agent and which is a polymer or copolymer having a repeating unit derived from a monomer represented by the following general formula (I) ##STR1## wherein R represents a hydrogen atom, a lower alkyl group containing from 1 to 4 carbon atoms or a chlorine atom; and X represents a halogen atom, an acylamino group, a carbamoyl group, a sulfonamido group, a sulfamoyl group, a cyano group or an alkoxycarbonyl group and which is present at the 4-position or 5-position of the phenyl group.
    Type: Grant
    Filed: May 10, 1982
    Date of Patent: October 11, 1983
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Morio Yagihara, Tsumoru Hirano, Keiji Mihayashi, Takashi Ozawa
  • Patent number: 4388404
    Abstract: A silver halide color photographic light-sensitive material is described containing a magenta color image forming polymer coupler latex and at least one compound represented by the following general formula (I) ##STR1## wherein R represents an alkyl group; and R.sub.1 and R.sub.2 each represents a tertiary alkyl group and R.sub.1 and R.sub.2 may be the same or different. The disclosed silver halide color photographic light-sensitive material has good film strength, a reduced layer thickness and provides a stable magenta image having an improved sharpness and fastness to light while preventing the formation of yellow stain in non-image areas. A method of forming a color image using the silver halide color photographic light-sensitive material is also described.
    Type: Grant
    Filed: April 19, 1982
    Date of Patent: June 14, 1983
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masakazu Morigaki, Morio Yagihara, Takashi Ozawa
  • Patent number: 4367282
    Abstract: A silver halide color photographic light-sensitive material is described comprising a support having thereon a silver halide emulsion layer containing a 2-equivalent magenta color image forming polymer coupler latex which is capable of forming a dye upon coupling with an oxidation product of an aromatic primary amine developing agent and which is a polymer or copolymer having a repeating unit derived from a monomer represented by formula (I) ##STR1## wherein R represents a hydrogen atom, a lower alkyl group containing from 1 to 4 carbon atoms or a chlorine atom; X represents --CONH--, --NH--, --NHCONH-- or --NHCOO--; Y represents --CONH-- or --COO--; A represents an unsubstituted or substituted alkylene group which may be a straight chain or a branched chain or an unsubstituted or substituted phenylene group; Ar represents an unsubstituted or substituted phenyl group; Za, Zb, Zc and Zd can each represent a methine group, a substituted methine group or -N.dbd.; m represents 0 or 1; and n represents 0 or 1.
    Type: Grant
    Filed: December 7, 1981
    Date of Patent: January 4, 1983
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Morio Yagihara, Tsumoru Hirano, Keiji Mihayashi
  • Patent number: 4345025
    Abstract: A color photographic silver halide light-sensitive material containing a colorless photographic cyan color-forming coupler having, in a position for coupling with the oxidation product of an aromatic primary amine developing agent, a coupling-off group represented by the following general formula (I):--O--R--SO--R.sub.1 (I)wherein R represents a substituted straight or branched chain alkylene group or a substituted straight or branched chain alkenylene group; R.sub.1 represents a substituted or unsubstituted straight or branched chain alkyl group, a straight or branched chain alkenyl group, a straight or branched chain aralkyl group, a straight or branched chain aralkenyl group, a cycloalkyl group, an aryl group or a heterocyclic group, and R and R.sub.1 may be bonded to each other directly or through a connecting group to form a ring. The 2-equivalent photographic cyan couplers have high coupling speed and excellent dispersibility.
    Type: Grant
    Filed: March 11, 1981
    Date of Patent: August 17, 1982
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Morio Yagihara, Yukio Yokota
  • Patent number: 4296200
    Abstract: A silver halide photographic light-sensitive material containing a colorless photographic cyan color forming coupler having, in a position for coupling with an oxidation product of an aromatic primary amine developing agent, a coupling-off group represented by the formula (I):--O--R--S--R.sub.1 (I)wherein R represents a substituted alkylene group or an unsubstituted or substituted alkenylene group, and said alkylene group or alkenylene group may be straight or branched chain; and R.sub.1 represents a substituted or unsubstituted alkyl group, an alkenyl group, an aralkyl group, an aralkenyl group, a cycloalkyl group or a heterocyclic group and said alkyl group, alkenyl group, aralkyl group and aralkenyl group may be straight or branched chain; and said heterocyclic group being connected with a thio group at the position of a carbon atom of the heterocyclic group.
    Type: Grant
    Filed: August 12, 1980
    Date of Patent: October 20, 1981
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Morio Yagihara, Yukio Yokota
  • Patent number: 4296199
    Abstract: A silver halide photographic light-sensitive material is described containing a colorless photographic cyan color-forming coupler having, in a position for coupling with an oxidation product of an aromatic primary amine developing agent, a coupling-off group represented by the formula (I)--O--(R.sub.1 S).sub.x (R.sub.2 S).sub.y R.sub.3 (I)wherein R.sub.1 and R.sub.2 each represents an alkylene group; R.sub.3 represents an alkyl group, a cycloalkyl group, an aryl group, or a heterocyclic group; x represents a positive integer; and y represents 0 or a positive integer.The photographic cyan color-forming coupler exhibits excellent dispersibility and color-forming properties.
    Type: Grant
    Filed: June 19, 1980
    Date of Patent: October 20, 1981
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Morio Yagihara, Yukio Yokota
  • Patent number: 4294918
    Abstract: A color photographic silver halide light-sensitive material is described containing a colorless photographic cyan color-forming coupler having, in a position for coupling with the oxidation product of an aromatic primary amine developing agent, as a coupling-off group, at least one alkoxy group substituted with a sulfinyl group represented by the formula (I)-O-R-SO-R.sub.1 (I)wherein R represents a saturated or unsaturated, divalent aliphatic group which may be straight or branched chain and may be substituted; and R.sub.1 represents a substituted or unsubstituted straight or branched chain alkyl group, an alkenyl group, an aralkyl group, an aralkenyl group, a cycloalkyl group, an aryl group or a heterocyclic group; and said heterocyclic group being connected with a sulfinyl group on the position of a carbon atom of the heterocyclic group.
    Type: Grant
    Filed: July 14, 1980
    Date of Patent: October 13, 1981
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Morio Yagihara, Yukio Yokota
  • Patent number: 4282312
    Abstract: A multilayer color photographic material having at least one red sensitive silver halide emulsion layer containing a cyan coupler of the formula (I): ##STR1## wherein X represents a hydrogen atom or a chlorine atom and n is a positive integer of 8 to 20, is processed by a color developer containing a developing agent of the formula (II): ##STR2## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represents a hydrogen atom, a chlorine atom, a methyl group, an ethyl group, a methoxy group or an ethoxy group; R.sub.5 represents an alkyl group having 1 to 4 carbon atoms, an alkoxyalkyl group wherein the number of carbon atoms in said alkyl moiety is 1 to 4, or a group of the formula --(CH.sub.2).sub.m R.sub.6 ; R.sub.6 represents a hydroxy group, a methylsulfonamido group, or an ethylsulfonamido group; and m represents a positive integer of 1 to 4.
    Type: Grant
    Filed: December 18, 1979
    Date of Patent: August 4, 1981
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshiyuki Watanabe, Takeshi Hirose, Morio Yagihara, Yukio Yokota